Answer:
Without the parentheses the second "+" would mean "string concatenation," not addition.
Without the parentheses the second "+" would mean "string concatenation," not addition.
Here is an input file for use with this program.
The file is named input.txt.
12 7
Here is a sample run of the program with this data file:
C:\temp>java AddTwo < input.txt Enter first number: Enter second number: Sum: 19 C:\temp>
Warning: The input file for this program cannot contain
any characters that are not part of an integer.
Each number must contain only the digits
0 through 9,
minus -,
and plus +.
The number can be separated by spaces or blank lines.
This input file will work:
12 -7
As will this:
12 -7
But not this:
12xxx7
or this:
12, 7
Will this input file work correctly?
12 7 -4 6